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Selection bias in innovation studies: A simple test

  • De Rassenfosse, Gaétan
  • Wastyn, Annelies

The study of the innovative output of firms often relies on a count of patents filed at one single office of reference such as the European Patent Office (EPO). Yet, not all firms file their patents at the EPO, raising the specter of a selection bias. Using a novel dataset of the whole population of patents by Belgian firms, we show that the single-office count results in a selection bias that affects econometric estimates of innovation production functions. We propose a methodology to evaluate whether estimates that rely on the single-office count are affected by a selection bias.

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Paper provided by ZEW - Zentrum für Europäische Wirtschaftsforschung / Center for European Economic Research in its series ZEW Discussion Papers with number 12-012.

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Date of creation: 2012
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Handle: RePEc:zbw:zewdip:12012
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  1. Richard Blundell & Rachel Griffith & John van Reenen, 1999. "Market Share, Market Value and Innovation in a Panel of British Manufacturing Firms," Review of Economic Studies, Oxford University Press, vol. 66(3), pages 529-554.
  2. Nicolas van Zeebroeck & Bruno Van Pottelsberghe, 2011. "Filing strategies and patent value," ULB Institutional Repository 2013/60731, ULB -- Universite Libre de Bruxelles.
  3. Valentina Meliciani, 2000. "The relationship between R&D, investment and patents: a panel data analysis," Applied Economics, Taylor & Francis Journals, vol. 32(11), pages 1429-1437.
  4. Ernst, Holger, 1998. "Industrial research as a source of important patents," Research Policy, Elsevier, vol. 27(1), pages 1-15, May.
  5. Blundell, Richard & Griffith, Rachel & Windmeijer, Frank, 2002. "Individual effects and dynamics in count data models," Journal of Econometrics, Elsevier, vol. 108(1), pages 113-131, May.
  6. Tappeiner, Gottfried & Hauser, Christoph & Walde, Janette, 2008. "Regional knowledge spillovers: Fact or artifact?," Research Policy, Elsevier, vol. 37(5), pages 861-874, June.
  7. Picci, Lucio, 2008. "The Internationalization of Inventive Activity: A Gravity Model Using Patent Data," MPRA Paper 12700, University Library of Munich, Germany.
  8. Jarno Hoekman & Koen Frenken & Frank Oort, 2009. "The geography of collaborative knowledge production in Europe," The Annals of Regional Science, Springer;Western Regional Science Association, vol. 43(3), pages 721-738, September.
  9. repec:fth:harver:1473 is not listed on IDEAS
  10. Hulya Ulku, 2007. "R&D, innovation, and growth: evidence from four manufacturing sectors in OECD countries," Oxford Economic Papers, Oxford University Press, vol. 59(3), pages 513-535, July.
  11. Stoneman, P, 1979. "Patenting Activity: A Re-evaluation of the Influence of Demand Pressures," Journal of Industrial Economics, Wiley Blackwell, vol. 27(4), pages 385-401, June.
  12. Philippe Aghion & Nick Bloom & Richard Blundell & Rachel Griffith & Peter Howitt, 2005. "Competition and Innovation: an Inverted-U Relationship," The Quarterly Journal of Economics, Oxford University Press, vol. 120(2), pages 701-728.
  13. Heckman, James J, 1979. "Sample Selection Bias as a Specification Error," Econometrica, Econometric Society, vol. 47(1), pages 153-61, January.
  14. Buesa, Mikel & Heijs, Joost & Baumert, Thomas, 2010. "The determinants of regional innovation in Europe: A combined factorial and regression knowledge production function approach," Research Policy, Elsevier, vol. 39(6), pages 722-735, July.
  15. Laura Bottazzi & Giovanni Peri, . "Innovation and Spillovers in Regions: Evidence from European Patent Data," Working Papers 215, IGIER (Innocenzo Gasparini Institute for Economic Research), Bocconi University.
  16. Robert M. Salomon & J. Myles Shaver, 2005. "Learning by Exporting: New Insights from Examining Firm Innovation," Journal of Economics & Management Strategy, Wiley Blackwell, vol. 14(2), pages 431-460, 06.
  17. Furman, Jeffrey L. & Porter, Michael E. & Stern, Scott, 2002. "The determinants of national innovative capacity," Research Policy, Elsevier, vol. 31(6), pages 899-933, August.
  18. Juan A. Correa, 2012. "Innovation and competition: An unstable relationship," Journal of Applied Econometrics, John Wiley & Sons, Ltd., vol. 27(1), pages 160-166, 01.
  19. Bruno Crepon & Emmanuel Duguet & Jacques Mairesse, 1998. "Research, Innovation And Productivity: An Econometric Analysis At The Firm Level," Economics of Innovation and New Technology, Taylor & Francis Journals, vol. 7(2), pages 115-158.
  20. Saul Lach & Mark Schankerman, 2003. "Incentives and Invention in Universities," NBER Working Papers 9727, National Bureau of Economic Research, Inc.
  21. Zvi Griliches, 1998. "Patent Statistics as Economic Indicators: A Survey," NBER Chapters, in: R&D and Productivity: The Econometric Evidence, pages 287-343 National Bureau of Economic Research, Inc.
  22. Akçomak, I. Semih & ter Weel, Bas, 2008. "Social Capital, Innovation and Growth: Evidence from Europe," IZA Discussion Papers 3341, Institute for the Study of Labor (IZA).
  23. Gourieroux Christian & Monfort Alain & Trognon A, 1982. "Pseudo maximum lilelihood methods : applications to poisson models," CEPREMAP Working Papers (Couverture Orange) 8203, CEPREMAP.
  24. Payne A. Abigail & Siow Aloysius, 2003. "Does Federal Research Funding Increase University Research Output?," The B.E. Journal of Economic Analysis & Policy, De Gruyter, vol. 3(1), pages 1-24, May.
  25. de Rassenfosse, Gaétan & Dernis, Hélène & Guellec, Dominique & Picci, Lucio & van Pottelsberghe de la Potterie, Bruno, 2013. "The worldwide count of priority patents: A new indicator of inventive activity," Research Policy, Elsevier, vol. 42(3), pages 720-737.
  26. Jerry A. Hausman & Bronwyn H. Hall & Zvi Griliches, 1984. "Econometric Models for Count Data with an Application to the Patents-R&D Relationship," NBER Technical Working Papers 0017, National Bureau of Economic Research, Inc.
  27. Nicolas van Zeebroeck, 2011. "The puzzle of patent value indicators," Economics of Innovation and New Technology, Taylor & Francis Journals, vol. 20(1), pages 33-62.
  28. Richard Gilbert, 2006. "Looking for Mr. Schumpeter: Where Are We in the Competition-Innovation Debate?," NBER Chapters, in: Innovation Policy and the Economy, Volume 6, pages 159-215 National Bureau of Economic Research, Inc.
  29. Robert K. Merton, 1935. "Fluctuations in the Rate of Industrial Invention," The Quarterly Journal of Economics, Oxford University Press, vol. 49(3), pages 454-474.
  30. Joaquín Azagra-Caro & Nicolas Carayol & Patrick Llerena, 2006. "Patent Production at a European Research University: Exploratory Evidence at the Laboratory Level," The Journal of Technology Transfer, Springer, vol. 31(2), pages 257-268, 03.
  31. de Rassenfosse, Gaetan & van Pottelsberghe de la Potterie, Bruno, 2009. "A policy insight into the R&D-patent relationship," Research Policy, Elsevier, vol. 38(5), pages 779-792, June.
  32. Gourieroux Christian & Monfort Alain & Trognon A, 1981. "Pseudo maximum likelihood methods : theory," CEPREMAP Working Papers (Couverture Orange) 8129, CEPREMAP.
  33. Thorwarth, Susanne & Kraft, Kornelius & Czarnitzki, Dirk, 2008. "The Knowledge Production of 'R' and 'D'," ZEW Discussion Papers 08-046, ZEW - Zentrum für Europäische Wirtschaftsforschung / Center for European Economic Research.
  34. Crepon, B. & Duguet, E. & Mairesse, J., 1998. "Research Investment, Innovation and Productivity: An Econometric Analysis at the Firm Level," Papiers d'Economie Mathématique et Applications 98.15, Université Panthéon-Sorbonne (Paris 1).
  35. repec:crs:wpaper:9833 is not listed on IDEAS
  36. Francesco Rentocchini, 2010. "Sources and characteristics of software patents in the European Union: some empirical considerations," Openloc Working Papers 1022, Public policies and local development.
  37. Nicolas Carayol, 2007. "Academic incentives and research organization for patenting at a large French university," Post-Print hal-00652488, HAL.
  38. Papke, Leslie E & Wooldridge, Jeffrey M, 1996. "Econometric Methods for Fractional Response Variables with an Application to 401(K) Plan Participation Rates," Journal of Applied Econometrics, John Wiley & Sons, Ltd., vol. 11(6), pages 619-32, Nov.-Dec..
  39. Dirk Fornahl & Tom Broekel & Ron Boschma, 2010. "What drives patent performance of German biotech firms? The impact of R&D subsidies, knowledge networks and their location," Papers in Evolutionary Economic Geography (PEEG) 1009, Utrecht University, Section of Economic Geography, revised Aug 2010.
  40. Michael Fritsch, 2002. "Measuring the Quality of Regional Innovation Systems: A Knowledge Production Function Approach," International Regional Science Review, , vol. 25(1), pages 86-101, January.
  41. Yuichiro Uchida & Paul Cook, 2007. "Innovation and Market Structure in the Manufacturing Sector: An Application of Linear Feedback Models," Oxford Bulletin of Economics and Statistics, Department of Economics, University of Oxford, vol. 69(4), pages 557-580, 08.
  42. Pakes, Ariel & Griliches, Zvi, 1980. "Patents and R&D at the firm level: A first report," Economics Letters, Elsevier, vol. 5(4), pages 377-381.
  43. Nicolas Carayol, 2007. "Academic Incentives, Research Organization And Patenting At A Large French University," Economics of Innovation and New Technology, Taylor & Francis Journals, vol. 16(2), pages 119-138.
  44. Dirk Czarnitzki & Bernd Ebersberger & Andreas Fier, 2007. "The relationship between R&D collaboration, subsidies and R&D performance: Empirical evidence from Finland and Germany," Journal of Applied Econometrics, John Wiley & Sons, Ltd., vol. 22(7), pages 1347-1366.
  45. Cincera, Michele, 1997. "Patents, R&D, and Technological Spillovers at the Firm Level: Some Evidence from Econometric Count Models for Panel Data," Journal of Applied Econometrics, John Wiley & Sons, Ltd., vol. 12(3), pages 265-80, May-June.
  46. Coupe, Tom, 2003. "Science Is Golden: Academic R&D and University Patents," The Journal of Technology Transfer, Springer, vol. 28(1), pages 31-46, January.
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